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PBS 2.2.3 An Inheritance Story

Total questions: 20

Worksheet time: 11mins

Name
Class
Date
1.
Aa, DD, bB, yy are all examples of
a)
genotypes
b)
phenotypes
2.
In a heterozygous genotype, the ___________ allele takes over in the phenotype.
a)
recessive
b)
dominant
c)
lower case letter
d)
both 
3.
B = brown eyes
b = blue eyes
What is true about these two brothers that have brown eyes?
One has genotype BB the other Bb.
a)
they have same phenotype and genotype
b)
they have different genotypes and phenotypes
c)
they have same phenotype but different genotypes
d)
they have same genotype but different phenotypes
4.

This pedigree is for Neurofibromatosis (NF1), which is a dominant disorder.

In this pedigree, individual III-3 indicates

a)

a female without NF1

b)

a male without NF1

c)

a male with NF1

d)

a female with NF1

5.
"Heritage Kennels" has two brown Rough (long haired) collies. Some of their puppies are black! Brown (B) is dominant over black (b). Which Punnett Square shows this cross?
a)
Option 1
b)
Option 2
c)
Option 3
6.

How many generations are represented in the pedigree?

a)

2

b)

3

c)

4

d)

5

7.
Which of the following is homozygous recessive?
a)
Tt
b)
tt
c)
TT
d)
T
8.

What does B indicate?

a)

line that indicates someone likes each other

b)

line that indicates a marriage

c)

line that indicates a relationship of parents and children

d)

A male that does not have the trait.

9.
Which of the following genotypes is homozygous dominant?
a)
A
b)
Aa
c)
AA
d)
aa
10.
Everyone has a gene for eye color. That gene can be blue, green, hazel, brown, black, silver, or even red for albinos. What term refers to the different types of one gene
a)
dominant
b)
variation
c)
recessive
d)
allele
11.
The mutated gene that causes neurofibromatosis uses the symbol N. What symbol is used for the non-mutated gene? *
a)
NN
b)
N+
c)
n+
d)
n
e)
Nn
12.
Which of the following is a phenotype?
a)
Aa
b)
red hair
c)
heterozygous
d)
DNA
13.
Dominant alleles are represented by a:
a)
Male gene
b)
lowercase letter
c)
recessive trait
d)
capital letter
14.

What does A indicate?

a)

A male that has the trait.

b)

A female that has the trait.

c)

A female that does not have the trait.

d)

A male that does not have the trait.

15.

This pedigree is for Neurofibromatosis, which is a dominant disorder. What is the Genotype of individual I-1?

a)

NN

b)

Nn

c)

nn

d)

Can't know for sure

16.
What you see, or the physical appearance.
a)
Genotype
b)
Phenotype
c)
Homozygous
d)
Heterozygous
17.
Which of the characteristics is a lion least likely to pass on to its offspring?
a)
fur color
b)
length of tail
c)
scars on leg
d)
body size
18.

This pedigree is for Neurofibromatosis, which is a dominant disorder. What is the Genotype of individual II-6?

a)

NN

b)

Nn

c)

nn

d)

Can't know for sure

19.
T - tall and t = short
In the punnett square below, what belongs in the missing square
a)
tt
b)
Tt
c)
Bb
d)
TT
20.

This pedigree is for Neurofibromatosis, which is a dominant disorder. What is the Genotype of individual III-6?

a)

NN

b)

Nn

c)

nn

d)

Can't know for sure

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